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usb: imx: Add clock support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2017-01-13 12:17:34 +01:00
parent 2eb99b610b
commit bbe0df90b8
1 changed files with 13 additions and 0 deletions
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13
drivers/usb/imx/chipidea-imx.c
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@ -27,6 +27,7 @@
#include <usb/fsl_usb2.h>
#include <linux/err.h>
#include <linux/phy/phy.h>
#include <linux/clk.h>
#define MXC_EHCI_PORTSC_MASK ((0xf << 28) | (1 << 25))
@ -44,6 +45,7 @@ struct imx_chipidea {
struct regulator *vbus;
struct phy *phy;
struct usb_phy *usbphy;
struct clk *clk;
};
static int imx_chipidea_port_init(void *drvdata)
@ -268,6 +270,17 @@ static int imx_chipidea_probe(struct device_d *dev)
if (IS_ERR(ci->vbus))
ci->vbus = NULL;
/*
* Some devices have more than one clock, in this case they are enabled
* by default in the clock driver. At least enable the main clock for
* devices which have only one.
*/
ci->clk = clk_get(dev, NULL);
if (IS_ERR(ci->clk))
return PTR_ERR(ci->clk);
clk_enable(ci->clk);
if (of_property_read_bool(dev->device_node, "fsl,usbphy")) {
ci->phy = of_phy_get_by_phandle(dev, "fsl,usbphy", 0);
if (IS_ERR(ci->phy)) {